39314527981 has 12 divisors (see below), whose sum is σ = 41895026388. Its totient is φ = 36885097472.

The previous prime is 39314527963. The next prime is 39314528021. The reversal of 39314527981 is 18972541393.

39314527981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 796932900 + 38517595081 = 28230^2 + 196259^2 .

It is a de Polignac number, because none of the positive numbers 2^k-39314527981 is a prime.

It is a super-2 number, since 2×39314527981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39314527951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122956 + ... + 306181.

It is an arithmetic number, because the mean of its divisors is an integer number (3491252199).

Almost surely, 2^39314527981 is an apocalyptic number.

It is an amenable number.

39314527981 is a deficient number, since it is larger than the sum of its proper divisors (2580498407).

39314527981 is a wasteful number, since it uses less digits than its factorization.

39314527981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429488 (or 429471 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 39314527981 in words is "thirty-nine billion, three hundred fourteen million, five hundred twenty-seven thousand, nine hundred eighty-one".